Corrugated pipe connecting structure

Abstract

The utility model relates to the technical field of flexible connection of corrugated pipes, in particular to a corrugated pipe connecting structure which comprises a connecting pipe and sealing rings, the sealing rings are installed in wave troughs at the ends of the corrugated pipes, and the two ends of the connecting pipe are connected with the two adjacent corrugated pipes in a sealed mode through the sealing rings respectively. Structural rings are arranged on the inner walls of the two ends of the connecting pipe and are in interference fit with the sealing rings. When the corrugated pipe is connected, the sealing ring is installed in the wave trough of the corrugated pipe, the risk that the sealing ring is squeezed and dragged in the socket installation process is avoided, the stability of the sealing ring in the installation process is guaranteed, the phenomena of position deviation and flanging are effectively prevented, meanwhile, the sealing ring is combined with the structural ring to form downward pressing type sealing, and the sealing effect is good. And the structural ring in the connecting pipe extrudes the sealing ring to form the required compression amount so as to realize sealing. Water leakage caused by flanging of the sealing ring in the pipeline connecting process can be prevented, and a good sealing effect can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible connection of bellows, and more specifically, to a bellows connection structure. Background Art

[0002] The commonly used connection method for PVC-U double-wall corrugated pipes is the flexible connection with a sealing ring. This connection method carries the risk of leakage from the sealing ring flange. During the installation of the pipe, the sealing ring is easily squeezed and twisted, causing the sealing ring to deform or be moved away from its original installation position, resulting in leakage from the flange.

[0003] The prior art discloses a waterproof and anti-slip corrugated pipe connector, which consists of a sleeve with a pin hole, a pin and an "O" type sealing ring. The pin consists of a pin cap and a wedge-shaped barb. The pin cap is connected to the upper part of the wedge-shaped barb. The "O" type sealing ring is inserted into the trough of the ends of two adjacent corrugated pipes to be connected. The ends of the two adjacent corrugated pipes already covered with the "O" type sealing ring are respectively inserted into the two ends of the sleeve with the pin hole. The wedge-shaped barb of the pin is passed through the pin hole and the wedge-shaped barb is correspondingly inserted into the trough of the corrugated pipe already inserted into the sleeve. The pin cap of the pin is located outside the outer wall of the sleeve. The sleeve and the two adjacent corrugated pipes are fixed by the pin to prevent the two from being disengaged. In this solution, the connector is sealed and connected to the pipeline by the "O" type sealing ring. However, in the process of connecting the pipeline, the "O" type sealing ring is easily twisted and deformed, resulting in leakage of the flange. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art that the sealing ring is easily twisted and deformed, resulting in leakage of the flange, and to provide a bellows connection structure to prevent the sealing ring from leaking and achieve a good sealing effect.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A bellows connection structure is provided, comprising a connecting pipe and a sealing ring, wherein the sealing ring is installed in the trough of the end of the bellows, and the two ends of the connecting pipe are respectively sealed and connected to two adjacent bellows through the sealing ring; structural rings are provided on the inner walls of the two ends of the connecting pipe, and the structural rings are interference fit with the sealing ring.

[0007] The bellows connection structure of this utility model connects the bellows with one end of the connecting pipe, and the sealing ring is installed in the trough of the bellows. This avoids the risk of being squeezed and dragged during the socket installation process, ensures the stability of the sealing ring during installation, and effectively prevents positional deviation and flanging. At the same time, the sealing ring combines with the structural ring to form a downward pressure seal. The structural ring inside the connecting pipe squeezes the sealing ring to form the required compression to achieve sealing. The utility model can prevent water leakage caused by flanging of the sealing ring during pipe connection, and can achieve a good sealing effect.

[0008] Furthermore, the sealing ring is a "U"-shaped sealing ring, which has better elasticity and sealing performance, and further prevents water leakage.

[0009] Furthermore, the outer wall of the structural ring is provided with convex arc surfaces on both sides, which can cooperate with the rounded corners on both sides of the crest of the corrugated pipe, playing a dual protection role in the sealing effect of pipes and fittings and the anti-falling effect of pipes, effectively preventing the problem of the corrugated pipe being easily fallen off due to hoisting or dragging during flexible connection, and ensuring the long-lasting and stable connection effect.

[0010] Furthermore, at least two structural rings are provided at each end of the connecting pipe, and sealing rings are installed in at least two troughs at the end of each bellows, with each structural ring corresponding to each sealing ring. It should be noted that multiple structural rings and sealing rings can be provided, each corresponding to a single one, to further enhance the sealing and anti-slip effects.

[0011] Furthermore, the device includes a spacer for real-time measurement of the bellows installation depth. The outer walls of both ends of the connecting pipe are each provided with a plurality of recesses for receiving the spacer. By directly observing the installation depth of the bellows, the device ensures that the bellows is properly installed and maintains a consistent installation depth for pipes of the same specification, thereby improving installation accuracy.

[0012] Furthermore, the distance mount includes a base, a pedometer wheel, and a rack. The bottom of the base is removably mounted in the recess. The pedometer wheel is rotatably mounted on the base. The rack is slidably mounted on the base along the axial direction of the bellows. The crests of the bellows and the rack respectively engage with the pedometer wheel. The rack is provided with a scale. The installation depth of the bellows can be determined by the difference in the scale before and after installation of the bellows, that is, before and after sliding of the rack. The distance mount can also be easily removed from the recess on the connecting pipe and installed in another recess on the connecting pipe, or installed in a recess on another connecting pipe, thereby improving the versatility of the distance mount and reducing installation costs.

[0013] Furthermore, the pedometer wheel includes a roller and a plurality of blades evenly spaced around the roller's periphery. The roller is rotatably connected to the base, and the crests of the bellows and the rack respectively engage with the blades. The blades facilitate rotation of the pedometer wheel, which in turn drives the rack to slide, thereby measuring the installation depth of the bellows.

[0014] Furthermore, a top plate is provided on the top of the base, and a T-shaped slot is provided at the bottom of the top plate, and the rack slides in the T-shaped slot. The rack can be limited and guided by the T-shaped slot to prevent the rack from falling.

[0015] Furthermore, positioning plates are fixed to both ends of the rack, and the two positioning plates can be respectively engaged with the two ends of the top plate. The rack can be easily reset through the positioning plates, and the two positioning plates can prevent the rack from sliding out of the two ends of the T-shaped slide.

[0016] Furthermore, the other end of the rack is detachably connected to a limiter, which can be snap-fitted to the top plate. The limiter can be used to conveniently and accurately install the bellows at a fixed distance, thus avoiding installation errors caused by human factors.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The sealing ring is combined with the structural ring to form a downward pressure seal, so that the sealing ring is located in the trough, avoiding the sealing ring from being squeezed and dragged during the socket installation process, ensuring the stability of the sealing ring during the installation process, and effectively preventing the sealing ring from position deviation and flanging;

[0019] 2. The cooperation between the structural ring and the wave crest provides dual protection for the sealing effect of pipes and fittings and the anti-falling effect of pipes, effectively preventing the problem of the corrugated pipe falling off easily due to hoisting or dragging during flexible connection, and ensuring the long-lasting and stable connection effect;

[0020] 3. The fixed-distance installation device can be used to achieve fixed-distance installation of the corrugated pipe, avoiding installation errors caused by human factors and improving installation efficiency and accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the connection between the bellows connecting structure and the bellows in an embodiment of the present utility model;

[0022] Figure 2 for Figure 1 Sectional view at mid-section AA;

[0023] Figure 3 for Figure 2 Enlarged view of the middle part B;

[0024] Figure 4 Installation diagram of the distance installer in the embodiment of the utility model;

[0025] Figure 5 A schematic structural diagram of a distance installer in an embodiment of the present utility model.

[0026] In the accompanying drawings: 1-connecting pipe; 11-structural ring; 12-pit; 13-raised rib; 2-sealing ring; 3-bellows; 31-wave trough; 32-wave crest; 4-fixed-distance installer; 41-base; 411-bottom plate; 412-top plate; 42-pedometer wheel; 421-roller; 422-blade; 43-rack; 44-positioning plate; 45-limiting member. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0028] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] Example 1

[0030] This embodiment is the first embodiment of the bellows connection structure. Figures 1 to 3 As shown, it includes a connecting pipe 1 and a sealing ring 2. The sealing ring 2 is installed in the trough 31 at the end of the bellows 3. The two ends of the connecting pipe 1 are sealed and connected to two adjacent bellows 3 through the sealing ring 2 respectively; the inner walls of the two ends of the connecting pipe 1 are provided with structural rings 11, and the structural rings 11 are interference fit with the sealing ring 2.

[0031] In the above-mentioned bellows connection structure, when connecting the bellows 3, one end of the connecting pipe 1 is socketed with the other end of the bellows 3, and the sealing ring 2 is installed in the trough 31 of the bellows 3, avoiding the risk of being squeezed and dragged during the socket installation process, ensuring the stability of the sealing ring 2 during the installation process, and effectively preventing the occurrence of positional offset and flanging. At the same time, the sealing ring 2 combines with the structural ring 11 to form a downward pressure seal. The structural ring 11 inside the connecting pipe 1 squeezes the sealing ring 2 to form the required compression to achieve sealing. This embodiment can prevent water leakage caused by flanging of the sealing ring 2 during the pipe connection process, and can achieve a good sealing effect.

[0032] The sealing ring 2 is a U-shaped sealing ring. The U-shaped sealing ring has a U-shaped cross-section, which provides better elasticity and sealing performance. When the structural ring 11 squeezes the U-shaped sealing ring, the deformation of the U-shaped sealing ring can compensate for the trough 31 of the squeezing bellows 3, further preventing water leakage.

[0033] The outer wall of the structural ring 11 is provided with convex curved surfaces on both sides, and the curved surfaces can cooperate with the rounded corners on both sides of the crest 32 of the bellows 3. Specifically, the curved surface of the structural ring 11 and the rounded corners on both sides of the crest 32 of the bellows 3 are interference-fitted to form a locking effect. During the installation process, a certain force is applied to enable the structural ring 11 to pass through the rounded corners on the side of the crest 32 and smoothly migrate from the trough 31 on one side of the crest 32 to the trough 31 on the other side of the crest 32. Similarly, during the disassembly process, a force similar to that during installation is required to complete the disassembly of the pipe, thereby improving the convenience of installation. At the same time, it plays a dual protective role in the sealing effect of pipes and fittings and the anti-slip effect of pipes, effectively preventing the problem of the bellows 3 being easily detached due to hoisting or dragging during flexible connection, and ensuring the long-lasting and stable connection effect.

[0034] like Figure 2 、 Figure 3 As shown, at least two structural rings 11 are provided at each end of the connecting pipe 1, and sealing rings 2 are installed in at least two troughs 31 at the end of each corrugated pipe 3, with each structural ring 11 corresponding to each sealing ring 2. It should be noted that multiple structural rings 11 and sealing rings 2 can be provided and correspond one to one to further enhance the sealing effect and anti-slip effect.

[0035] The working principle of the bellows connection structure of this embodiment is as follows:

[0036] Insert one end of the two bellows 3 into the two ends of the connecting pipe 1 respectively, and the inner wall of the connecting pipe 1 does not contact the "U"-shaped sealing ring in the trough 31, avoiding the risk of the "U" sealing ring being squeezed and dragged, ensuring the stability of the "U" sealing ring during installation, and effectively preventing the "U" sealing ring from position deviation and flanging. During the socket-insertion process, the structural ring 11 located in the trough 31 has an interference fit with the fillet of the crest 32, and a certain force is applied to make the structural ring 11 pass through the fillet on the side of the crest 32, so that the structural ring 11 migrates from the trough 31 on one side of the crest 32 to The trough 31 on the other side of the crest 32, until the structural ring 11, respectively corresponds to the "U"-shaped sealing ring installed in the trough 31, and the sealing effect is achieved by the compression formed by the structural ring 11 squeezing the sealing ring 2; wherein, when the sealing is completed, the structural ring 11 located in the trough 31 has an interference fit with the fillet of the crest 32. When disassembling, it is necessary to apply external force to complete the disassembly of the pipe. The cooperation between the structural ring 11 and the crest 32 plays a dual protective role in the sealing effect of the pipe fittings and the anti-falling effect of the pipe, which can effectively prevent the pipe from falling off when hoisting or dragging the flexibly connected pipe.

[0037] Example 2

[0038] This embodiment is the second embodiment of the bellows connection structure. This embodiment is similar to the first embodiment, except that Figure 4 As shown, the apparatus further includes a distance installer 4 for measuring the installation depth of the corrugated pipe 3 in real time. The outer walls of the two ends of the connecting pipe 1 are respectively provided with a plurality of recesses 12 for installing the distance installers 4. When connecting the corrugated pipe 3, the recess 12 for installing the distance installer is selected according to the actual situation. The distance installer 4 is installed in the recess 12 at one end of the connecting pipe 1. First, a corrugated pipe 3 is connected to the connecting pipe 1. The installation depth of the corrugated pipe 3 indicated by the distance installer 4 is used to determine whether the corrugated pipe 3 is installed in place. Then, the distance installer 4 is removed from the recess 12 at one end of the connecting pipe 1 and the distance installer 4 is installed in the recess 12 at the other end of the distance installer 4. The above operation is repeated to complete the distance installation of another corrugated pipe 3. This real-time example can directly observe the installation depth of the corrugated pipe 3, ensure that the corrugated pipe 3 is installed in place, and can also keep the installation depth of pipes of the same specification consistent, thereby improving installation accuracy.

[0039] like Figure 4 、 Figure 5As shown, the distance mounter 4 includes a base 41, a pedometer wheel 42 and a rack 43. The bottom of the base 41 is detachably mounted in the recess 12. The pedometer wheel 42 is rotatably mounted on the base 41. The rack 43 is slidably mounted on the base 41 along the axial direction of the bellows 3. The wave crests 32 of the bellows 3 and the rack 43 are respectively engaged with the pedometer wheel 42. The rack 43 is provided with a scale. Specifically, the bottom of the base 41 is provided with a bottom plate 411 embedded in the recess 12. The bottom plate 411 is clamped by the recess 12, so that the base 41 can be quickly assembled and disassembled. The pedometer wheel 42 includes a roller 421 and a plurality of blades 422 evenly spaced on the outer periphery of the roller 421. The roller 421 is rotatably connected to the base 41. The wave crests 32 of the bellows 3 and the rack 43 are respectively engaged with the blades 422. During implementation, the bellows 3 is inserted from one end of the connecting tube 1. The wave crest 32 of the bellows 3 pushes the blades 422 and the roller 421 to rotate. The other blades 422 on the roller 421 engage the rack 43, driving the rack 43 to slide. The installation depth of the bellows 3 can be obtained based on the difference in the scale before and after the rack 43 slides. After the bellows 3 is connected to one end of the connecting tube 1, the base 41 can be removed from the pit 12 and installed in the pit 12 at the other end of the connecting tube 1. The rack 43 is pulled to reset, and the above operation is repeated to install another connecting tube 1. In this embodiment, the distance installer 4 can be easily removed from the pit 12 on the connecting tube 1 and installed in another pit 12 on the connecting tube 1, or installed in the pit 12 on another connecting tube 1, which can improve the versatility of the distance installer 4 and reduce installation costs.

[0040] like Figure 5 As shown, the top of the base 41 is provided with a top plate 412, and the bottom of the top plate 412 is provided with a T-shaped slot, in which the rack 43 slides. When the pedometer wheel 42 drives the rack 43 to move or the rack 43 is manually pulled to reset, the T-shaped slot can limit and guide the rack 43 to prevent it from falling.

[0041] Example 3

[0042] This embodiment is the third embodiment of the bellows connection structure. This embodiment is similar to the second embodiment, except that Figure 4 、 Figure 5As shown, positioning plates 44 are fixed to both ends of the rack 43, and the two positioning plates 44 can be respectively engaged with the two ends of the top plate 412. When connecting the corrugated pipe 3, first select the pit 12 for installing the distance mounter 4 according to the actual situation, install the distance mounter 4 in the pit 12, and manually pull the rack 43 to the initial position so that the positioning plate 44 on the end of the rack 43 close to the pedometer wheel 42 is engaged with the top plate 412. At this time, the position on the rack 43 corresponding to the other end of the top plate 412 is the zero position of the scale. When the corrugated pipe 3 is plugged in, the peak 32 drives the rack 43 to move through the pedometer wheel 42, and the scale mark on the position on the rack 43 corresponding to the other end of the top plate 412 is the installation depth of the corrugated pipe 3.

[0043] like Figure 4 、 Figure 5 As shown, the other end of the rack 43 is detachably connected to the limiter 45, and the limiter 45 can be snap-fitted with the top plate 412. Specifically, the rack 43 is slidably inserted into the limiter 45, and the limiter 45 is detachably connected to the rack 43 by bolts. During implementation, according to the installation depth of pipes of different specifications, the limiter 45 is moved to the corresponding scale mark, the limiter 45 is fixed to the rack 43 with bolts, and the rack 43 is manually pulled to reset, so that the positioning plate 44 on the end of the rack 43 near the pedometer wheel 42 is snap-fitted with one end of the top plate 412, and then the bellows 3 is connected until the limiter 45 is snap-fitted with the other end of the top plate 412, completing the connection of the bellows 3. In this embodiment, the connection between the limiter 45 and the top plate 412 can be used to determine whether the pipe has been installed in place, thereby achieving fixed-distance installation of the pipe, avoiding installation errors caused by human factors, and improving installation efficiency and accuracy; and the installation depth of pipes of the same specification can be kept consistent, which simplifies the installation process and improves installation efficiency.

[0044] like Figure 1 、 Figure 2 and Figure 4 As shown, a plurality of raised ribs 13 are provided on the outer wall of the connecting pipe 1 to enhance the structural strength of the connecting pipe 1 , provide additional support for the connecting pipe 1 , and enhance the stability of the connecting pipe 1 .

[0045] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A bellows connection structure, comprising a connecting pipe (1) and a sealing ring (2), wherein the sealing ring (2) is installed in a trough (31) at the end of the bellows (3), and the two ends of the connecting pipe (1) are respectively sealed and connected to two adjacent bellows (3) through the sealing ring (2); characterized in that: Structural rings (11) are provided on the inner walls of both ends of the connecting pipe (1), and the structural rings (11) are interference-fitted with the sealing ring (2).

2. The bellows connection structure according to claim 1, characterized in that: The sealing ring (2) is a "U"-shaped sealing ring.

3. The bellows connection structure according to claim 1, characterized in that: Both sides of the outer wall of the structural ring (11) are provided with convex arc surfaces, and the arc surfaces can cooperate with the rounded corners on both sides of the wave crest (32) of the corrugated tube (3).

4. The bellows connection structure according to claim 1, characterized in that: At least two structural rings (11) are respectively provided at both ends of the connecting pipe (1), and at least two troughs (31) at the end of each of the bellows (3) are installed with the sealing rings (2), and each structural ring (11) is matched with each of the sealing rings (2) in a one-to-one correspondence.

5. The bellows connection structure according to any one of claims 1 to 4, characterized in that: It also includes a distance installer (4) for real-time measurement of the installation depth of the corrugated pipe (3), and the outer walls of both ends of the connecting pipe (1) are respectively provided with a plurality of pits (12) for installing the distance installer (4).

6. The bellows connection structure according to claim 5, characterized in that: The distance mounter (4) comprises a base (41), a pedometer wheel (42) and a rack (43). The bottom of the base (41) is detachably mounted in the pit (12). The pedometer wheel (42) is rotatably mounted on the base (41). The rack (43) is slidably mounted on the base (41) along the axial direction of the corrugated tube (3). The wave crest (32) of the corrugated tube (3) and the rack (43) are respectively engaged with the pedometer wheel (42). The rack (43) is provided with a scale.

7. The bellows connection structure according to claim 6, characterized in that: The pedometer wheel (42) comprises a roller (421) and a plurality of blades (422) evenly spaced on the periphery of the roller (421); the roller (421) is rotatably connected to the base (41); the wave crest (32) of the bellows (3) and the rack (43) are respectively engaged with the blades (422).

8. The bellows connection structure according to claim 6, characterized in that: A top plate (412) is provided on the top of the base (41), a T-shaped sliding groove is provided on the bottom of the top plate (412), and the rack (43) slides in the T-shaped sliding groove.

9. The bellows connection structure according to claim 8, characterized in that: Positioning plates (44) are fixedly provided at both ends of the rack (43), and the two positioning plates (44) can be respectively engaged with both ends of the top plate (412).

10. The bellows connection structure according to claim 9, characterized in that: The other end of the rack (43) is detachably connected to a limiting member (45), and the limiting member (45) can be snap-connected to the top plate (412).

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